# Monthly Archives: November 2012

## PrettyR R

November 1, 2012
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When it comes to R blogging I'm a complete newbie. So I'm still struggling with the technical details.Part of the process is prettifying the code snippets. One of the standard ways of doing this involves copy-and-paste-ing the R code into the Pretty R ...

## Data types, part 1: Ways to store variables

November 1, 2012
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I've been alluding to different R data types, or classes, in various posts, so I want to go over them in more detail. This is part 1 of a 3 part series on data types. In this post, I'll describe and give a general overview of useful data types.  I...

## Watch Obama and Romney criss-cross the US

November 1, 2012
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The Washington Post has an interactive graphic showing the rate at which the US presidential candidates Barack Obama and Mitt Romney have visited the various states for campaign rallies and fundraisers. Here's how it looks today: You can clearly see the focus on key swing states like Florida and Ohio, as well as non-competitive (but donor-rich) states like California...

## R in the Press

November 1, 2012
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Here is the list of press reports and news about R Bits (A bog under The New York Times) R you ready for R? by Ashlee Vance Published: January 8, 2009, 1:52 PM The New York Times Data Analysts Captivated by R’s Power by Ashlee Vance Published: January 6, 2009  InfoWorld The BI battle isn’t

## Variable probability Bernoulli outcomes – Fast and Slow

November 1, 2012
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I am working on a project that requires the generation of Bernoulli outcomes. Typically, I would go about this using the built in sample() function like so: This works great and is fast, even for large n. Problem is, I want to generate each sample with its own unique probability. Seems straight forward enough, I

## Correlation: Easy as 1-2-3?

November 1, 2012
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I recently had a task to take a look at some assessment (audit) data. I was assuming, rather hoping for data with a normal distribution and thought it would be a quick case of Pearson correlation between two columns: "Duration" and "Score". Just conjecture at this point as I did not understand what the assessment process

## Upcoming R training by Hadley Wickham: SF Dec 3-4, DC Dec 10-11

November 1, 2012
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(By Hadley Wickham) Hi all, I’d like to let you know about four R training courses that RStudio will be offering in December: * Effective data visualization (http://bit.ly/TY2ONI) Dec 3. San Francisco, CA * Reports and reproducible research (http://bit.ly/RsZmYr) Dec 4. San Francisco, CA * Advanced R programming (http://bit.ly/RvZDsd) Dec 10. Washington, DC * Package development (http://bit.ly/UhTIWz) Dec 11....

## New version of RStudio (v0.97)

November 1, 2012
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Today a new version of RStudio (v0.97) is available for download from our website.  The principal focus of this release was creating comprehensive tools for R package development. We also implemented many other frequently requested enhancements including a new Vim editing mode and a much improved Find and Replace pane. Here’s a summary of what’s

## GGtutorial: Day 4 – More Colors

November 1, 2012
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So far we’ve covered Melting and Casting data using the reshape() package and today we’re going to look at different ways of coloring and selecting palettes for plots. For these plots, we’re going to use the built in diamonds data...

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